63081040 has 80 divisors (see below), whose sum is σ = 161864640. Its totient is φ = 22671360.

The previous prime is 63081037. The next prime is 63081049. The reversal of 63081040 is 4018036.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63081049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84991 + ... + 85729.

It is an arithmetic number, because the mean of its divisors is an integer number (2023308).

Almost surely, 2^63081040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63081040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80932320).

63081040 is an abundant number, since it is smaller than the sum of its proper divisors (98783600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63081040 is a wasteful number, since it uses less digits than its factorization.

63081040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 63081040 is about 7942.3573326815. The cubic root of 63081040 is about 398.0762629210.

Adding to 63081040 its reverse (4018036), we get a palindrome (67099076).

It can be divided in two parts, 6 and 3081040, that multiplied together give a triangular number (18486240 = T₆₀₈₀).

The spelling of 63081040 in words is "sixty-three million, eighty-one thousand, forty".